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Micro pH electrode assembly for wire transmission

  • US 4,319,578 A
  • Filed: 10/09/1979
  • Issued: 03/16/1982
  • Est. Priority Date: 10/09/1979
  • Status: Expired due to Term
First Claim
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1. A dental assembly useful for the wire transmission measurement of oral cavity fluids'"'"' ionic changes by attachment to an existing tooth, comprising:

  • A. a dental assembly housing, said housing having a bottom, an opposed pair of end faces, a curvilinear surface, and an axial bore having a first aperture on one end face and a second aperture on the other end face;

    B. an ionic indicator electrode assembly comprising;

    a tubular housing having a first and a second opposed pair of open ends and wherein the housing is of heat shrunken material;

    a cylindrical indicator electrode which is responsive to changes in ionic activity, said indicator electrode including an electrode stem and wherein the electrode is positioned within the tubular housing proximate the first end of the tubular housing defining an annular space therebetween;

    a first means for sealing the electrode to the tubular housing against moisture migration;

    an electrically conductive cylindrical plug positioned proximate the second end of the tubular housing, said plug having a means for electrically connecting the transmission wire to the plug;

    a second means for sealing the plug to the tubular housing against moisture migration;

    a third means for sealing the transmission wire to the plug against moisture migration;

    a means for electrically connecting the indicator electrode to the plug;

    wherein the ionic indicator electrode assembly is positioned within the axial bore such that the first end of the housing is proximate the aperture of one end face; and

    ;

    a means for fixedly attaching the dental housing to the tooth.

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